James George Frazer,
The Golden Bough: A Study in Magic and Religion…
“ Day after day men and cattle may be tormented by the sight of clouds that gather and then pass away without disburdening themselves of their contents. At last the long-drawn struggle between the rival forces comes to a crisis. The sky darkens, thunder peals, lightning flashes, and the welcome rain descends in sheets, drenching the parched earth and flooding the rivers. Such a battle of the elements might well present itself to the primitive mind in the guise of a conflict between a maleficent dragon of drought and a beneficent god of thunder and rain. ”
